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* Update to xealousbrown. 5-13ms Latency decrease, 4x scan rate improvement. (CUSTOM_MATRIX = lite) is a really great feature! * Updated Readme.md, added an extra speedhack. * More optimizations * Update keyboards/handwired/xealousbrown/rules.mk * Update keyboards/handwired/xealousbrown/rules.mk
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| /* | ||
| Copyright 2019 Alex Ong | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 2 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| #include <stdint.h> | ||
| #include <stdbool.h> | ||
| #include "wait.h" | ||
| #include "util.h" | ||
| #include "matrix.h" | ||
| #include "debounce.h" | ||
| #include "quantum.h" | ||
|
|
||
| /* matrix state(1:on, 0:off) */ | ||
| extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values | ||
| extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values | ||
|
|
||
| // matrix code | ||
| // super fast read_cols code. | ||
| static matrix_row_t read_cols(void) { | ||
| return (PINC & (1 << 6) ? 0 : (1UL << 0)) | | ||
| (PIND & (1 << 7) ? 0 : (1UL << 1)) | | ||
| (PINE & (1 << 6) ? 0 : (1UL << 2)) | | ||
| (PINB & (1 << 4) ? 0 : (1UL << 3)) | | ||
| (PINB & (1 << 5) ? 0 : (1UL << 4)) | | ||
| (PINB & (1 << 6) ? 0 : (1UL << 5)) | | ||
| (PINB & (1 << 2) ? 0 : (1UL << 6)) | | ||
| (PINB & (1 << 3) ? 0 : (1UL << 7)) | | ||
| (PINB & (1 << 1) ? 0 : (1UL << 8)) | | ||
| (PINF & (1 << 7) ? 0 : (1UL << 9)) | | ||
| (PINF & (1 << 6) ? 0 : (1UL << 10)) | | ||
| (PINF & (1 << 5) ? 0 : (1UL << 11)) | | ||
| (PINF & (1 << 4) ? 0 : (1UL << 12)); | ||
| } | ||
|
|
||
| static void unselect_rows(void) { | ||
| DDRD &= ~0b00011111; | ||
| PORTD &= ~0b00011111; | ||
| } | ||
|
|
||
| static void select_row(uint8_t row) { | ||
| switch (row) { | ||
| case 0: | ||
| DDRD |= (1 << 3); | ||
| PORTD &= ~(1 << 3); | ||
| break; | ||
| case 1: | ||
| DDRD |= (1 << 2); | ||
| PORTD &= ~(1 << 2); | ||
| break; | ||
| case 2: | ||
| DDRD |= (1 << 1); | ||
| PORTD &= ~(1 << 1); | ||
| break; | ||
| case 3: | ||
| DDRD |= (1 << 0); | ||
| PORTD &= ~(1 << 0); | ||
| break; | ||
| case 4: | ||
| DDRD |= (1 << 4); | ||
| PORTD &= ~(1 << 4); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| static void init_pins(void) { | ||
| DDRC &= ~(1 << 6); | ||
| PORTC |= (1 << 6); | ||
| DDRD &= ~(1 << 7); | ||
| PORTD |= (1 << 7); | ||
| DDRE &= ~(1 << 6); | ||
| PORTE |= (1 << 6); | ||
| DDRB &= ~(1 << 4 | 1 << 5 | 1 << 6 | 1 << 2 | 1 << 3 | 1 << 1); | ||
| PORTB |= (1 << 4 | 1 << 5 | 1 << 6 | 1 << 2 | 1 << 3 | 1 << 1); | ||
| DDRF &= ~(1 << 7 | 1 << 6 | 1 << 5 | 1 << 4); | ||
| PORTF |= (1 << 7 | 1 << 6 | 1 << 5 | 1 << 4); | ||
| } | ||
|
|
||
| // Only need to init the pins. Debounce / raw matrix are initialized already for us. | ||
| void matrix_init_custom(void) { | ||
| // initialize key pins | ||
| init_pins(); | ||
| } | ||
|
|
||
| // Only need to scan the result into current_matrix, and return changed. | ||
| uint8_t matrix_scan_custom(matrix_row_t current_matrix[]) { | ||
| bool changed = false; | ||
|
|
||
| // Set row, read cols | ||
| for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { | ||
| select_row(current_row); | ||
| asm volatile("nop"); | ||
| asm volatile("nop"); | ||
| matrix_row_t cols = read_cols(); | ||
| changed |= (current_matrix[current_row] != cols); | ||
| current_matrix[current_row] = cols; | ||
| unselect_rows(); | ||
| } | ||
|
|
||
| return changed; | ||
| } |
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